van de Ven: Introducing 'timechart' [LWN.net]

van de Ven: Introducing 'timechart'

Posted Sep 15, 2009 3:04 UTC (Tue) by NightMonkey (subscriber, #23051)
Parent article: Van de Ven: Introducing 'timechart'

OK, I'll bite. Where is the link to the program source?

to post comments

van de Ven: Introducing 'timechart'

Posted Sep 15, 2009 4:04 UTC (Tue) by arjan (subscriber, #36785) [Link] (6 responses)

it was posted to lkml a few days ago; it's unfortunately not yet just "download a bit of userspace program", it includes some kernel infrastructure patches as well.

van de Ven: Introducing 'timechart'

Posted Sep 15, 2009 6:10 UTC (Tue) by NightMonkey (subscriber, #23051) [Link]

Thank you for the info. Gosh it is nice to have LWN around. :)

van de Ven: Introducing 'timechart'

Posted Sep 15, 2009 8:59 UTC (Tue) by mjthayer (guest, #39183) [Link] (4 responses)

Is this something that distributions are likely to be happy enabling by default? I gather that that was not the case for latencytop, and it would really be a shame if timechart wasn't used as widely as it might be.

van de Ven: Introducing 'timechart'

Posted Sep 15, 2009 9:08 UTC (Tue) by mingo (subscriber, #31122) [Link]

Yes, since it's an extension/usage of performance counters, it should be present in distributions that have perfcounters enabled.

In fact since it's a new sub-command of tools/perf/ it will get into those distributions automatically, once they update to a kernel that includes these bits.

So "perf timechart" should show up in a distro near you.

van de Ven: Introducing 'timechart'

Posted Sep 15, 2009 11:04 UTC (Tue) by arjan (subscriber, #36785) [Link] (2 responses)

the distros I use (moblin and fedora) both have latencytop on
I'm not aware of any distro that doesn't have it on...

van de Ven: Introducing 'timechart'

Posted Sep 15, 2009 14:28 UTC (Tue) by dtlin (subscriber, #36537) [Link] (1 responses)

Debian does not ship with a latencytop-enabled kernel:
http://bugs.debian.org/478739

van de Ven: Introducing 'timechart'

Posted Sep 22, 2009 11:03 UTC (Tue) by johnflux (guest, #58833) [Link]

The reason appears to be that this option introduces too many debug options, which debian does not like to enable by default.